Cleaning-brush for linotype-machine plungers.



L. EWALD.

CLEANING BRUSH FOR LINOTYPE MACHINE PLUNGERS.

APPLICATION FILED JUNE16,1913.

1,106,795 Patented Aug.11,1914.

7%) LEO EN;

8 .&

TH'E AORRIS PETERS C0,. FHOTO-LITHO., WASHINGTDN D. C

. Machine Plungers, of which the following is I Lno aware, or iiiiiviinnronrs, mnnsorn.

CLEANING-BRUSH FOB, tmoryrn-iuecninn tasteless;

Specification of iet tersPa tent. Application filed June .16, 1913.

p tent-ea Aug. '11, 1914'. Serial no. 774,072.

To all whom itmag concern} Be it known that I, LEO EwALn, a citizen of the United States, resident of Minna apolis, Henne'pin. county, Minnesota, have invented certain new and useful Improvements n Cleaning-Brushes for L notypea specification. s v

The plunger used for feeding the molten metal in a linotype machine becomes coated with a fine lead dust and when this dust is brushed off the plunger in the ordinary way the room where the machine is located becomes filled with the floating particles; of:

lead and thehealth of thelinotype machine operators and printers is often seriously affected by being compelled to breathe the airvladen with this poisonous dust. a

The object, therefore, of my invention is to provide an apparatus by means of which. the

lead from lowing any of the dust to escape and mingle with the air of the room. A i

A further object is to provide an apparatus into which-the plunger tobe cleaned can .be easily and quickly inserted and as dust can beeasily and quickly cleaned readily removed.

The invention consists generally rious constructions and combinations, all as hereinafter described In the accompanying drawings forming part of this specificatiomFigure 1 is a plan View of an apparatus embodying my invention, Fig. 2 is a vertical sectional view of the same, F ig.v.8 is a transverse sectional view through the brush and thechamber where the plunger is arranged, Fig. 4 is a transverse sectional view, showing the arrangement of the plunger from the shaft of the brush.

base. On this base a casing 3 is mounted, having a removable cover 4:; In the bottom of the casing is a drawer 5 that"is adapted to receive the dust during the operation of brushing the plunger. 6 is a shaft, mounted in bearings at one end in the casing and journaled at its other end in a standard 7. On this shaft I mount a brush 8 having wire or other suitable bristles which are adapted to contact with the surface of the plunger and clean the dust therefrom. This shaft 6 has an end 9 that is adapted to receive an operating crank. A gear 10 is mounted on the surface of the plunger without al-y such as the; slotted and particularly pointed out in the claims.-

gearlng for revolving the opening therein for the insertion of the plunger I am able to avoid the necessity of opening the casingand allowing the escape of any of the particles of lead dust which may have accumulated therein. .Th'e plunger 1 6 is inserted into the casing 3 through the opening 13 and has a rod 17, which is preferably flattened in form, as indicated-in Fig. 1, for insertion into a radial slot 18 formed in the gear 12. a. This slot allows the convenient, insertion of the plunger and rod into the casing andremova'l therefrom. The plunger has to be'cleanedat intervals and is usually very hot, and the operator has but little time to perform the cleaning operation, hence it is essential that some means, gear, be provided to. allow the plunger to. be A easily and quickly mounted in the casing and operatively connected with driving meansh Other .mec'hanisms might be employed for this purpose,

I but I prefer the slotted gear ,device illustrated herein,

as the operator can pickup the plunger,

insert the head into the casing andhdrop the rod into the gear without loss of time and without the necessity of handling the .hot plunger eXcept for a very brief interval. 1

. Within the casing is a frame 19 pivoted at 20 in the casing walls and having a curved seat 21 provided with anti-friction rollers y .22 and 23. These rollers are adaptedto con- In the drawing, 2 represents a suitable tact with the plunger 16 and form an antifriction bearing therefor in the seat 21. A bolt 24 is mounted in the frame 19 and is provided with a thumb nut 25 and a spring 26, said bolt projecting through the wall of the casing and the spring is located between the frame 19 and the casing wall so that by the movement of the nut 25 the frame 19 can be moved away from the plunger to allow it to drop down out of contact with the brush, or the plunger may be held toward the brush with a yielding pressure through the engagement of the spring 26 with the casing wall and with the frame. I am thus able to from the plunger and its deposit in the botregulateto a nicety the pressure of the brush on the plunger. 1 V

The operation of the device is as follows :The plungerbeing inserted into the casing and the cover 15 closed, the brush will be s revolvedby means of a suitable crank placed on the shaft 6 and thereupon the brush and plunger will be revolvedin the same direction, but their contacting surfaces will be moved in opposite directions, thus insuring a thorough brushing of the plunger and. complete separation of the dust tom of the chamber. i r

I claim as my invention 1. A means for cleaning a linotype machine plunger comprising a casing," a brush mountedtherein meansadapted to support a plunger inserted into said casing adjacent to said brush, a gear having a radial slot adapted to receive a plunger rod, and means for revolving said'brush and gear.

2. A means for cleaning a'linotype machine plunger comprising a casing having an opening in its wall adapted to receive a plunger lnserted therein, a houslng enclrcling said opemng and adapted to lnclose ,the plunger rod, said housinghaving' an opening therein and a cover, a gear mounted opposite said housing and having a radial slot to receive the plunger rod, a brush mounted in said casing, and means for re volving said brushand gear,

3. A plunger cleaning device comprising a, shaft, a brush thereon, a casing for said brush, 'a seat provided-within said casing adapted to support a plunger head, oneend of said shaft having a driving connection, and-mechanism connecting said shaft with the rod of said plunger.

l. A plunger cleaning device comprising a casing, a brush having a driving shaft journaled therein, a seat provided Within said casing adapted to supporta plunger head, the rod of said plunger head and said shaft being in substantially. parallel relation with one another, and a gear mechanism operatively' connecting said shaft with said plunger rod.

Copies of this patent may be obtained for five cents each, by addressing Washington, D. G.

5. A plunger'cleaning device comprising a shaft, a brush driven thereby, a'seat provided within said casing adapted to support a plunger head, means for moving said seat toward or from said brush to increase or decreasethe pressure thereof on said plunger head, and a gear mechanismoperatively connecting said shaft with the plunger'rod,

6. A means for cleaning a linotype'machine plunger comprising a easing into which the plunger-to be cleanedis inserted,

a gear having a radial slot adapted to receive 1 r the plunger rod, means for operating said,

gear to revolve said plunger, and means mounted wlthin sald casing for brushlng the surface of said plunger;

7. A means'for cleaning a linotype mw chlne plunger comprrsmg a casing into which the plunger tobe' cleaned is inserted, a gear havinga radlalslotto receive the plunger rod, a brush'mounted to revolve within said casing and contact with the surface of sald plunger, and a driving connection between said brush and said gear;

8. A means for" cleaning a linotype machine plunger'comprising a casing having an opening in its wall through which the plunger head is inserted, the rod of the plunger projecting outside said casing, means for cleaning the surface of the plunger; within said casing, means for closing the opening in the wall of saidjcasing around said plunger rod, and a drivingxmechanism having means to enga'ge'sai'd rod 1 and "revolve the same and said plunger-head; a i

' '9. A plungerlcleaning device" comprisinga casing, a brush having aishaft journaled the Commissioner of Patents, 

